The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samsung 20-50mm F3.5-5.6 ED and the Samsung 10mm F3.5 Fisheye for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Samsung 20-50mm F3.5-5.6 ED is the longer of the two lenses at 40mm. The Samsung 10mm F3.5 Fisheye with a length of 26mm, is 14mm shorter. Besides being longer, the Samsung 20-50mm F3.5-5.6 ED also has a larger diameter of 64mm compared to the Samsung 10mm F3.5 Fisheye's 59mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Samsung 10mm F3.5 Fisheye weighs 71g, 40% (48g) lighter than the Samsung 20-50mm F3.5-5.6 ED's weight of 119g.
Lens Mounts
Both the Samsung 20-50mm F3.5-5.6 ED and the Samsung 10mm F3.5 Fisheye has the same Samsung NX lens mount. Some of the latest released cameras that are compatible with the Samsung NX lenses are Samsung NX1, Samsung NX3000 and Samsung NX30.
Focal Range
Samsung 20-50mm F3.5-5.6 ED has a focal range of 20-50mm and
2.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
30-75mm when used on a APS-C / DX format camera.
On the other hand, the Samsung 10mm F3.5 Fisheye is a prime lens with fixed focal lenght of 10mm which has an effective (full-frame 35mm equivalent) focal range of 15mm when used on a APS-C / DX format camera.